Finding the Fourth Proportional to 124,378.91, 171,670.62 and 79,048.07
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Solution
The fourth proportional to 124,378.91, 171,670.62 and 79,048.07 is: 109,103.95
Step by Step Solution
- Step 1: Write the proportion equation
124,378.91 : 171,670.62 = 79,048.07 : x - Step 2: Convert to fraction form
124,378.91/171,670.62 = 79,048.07/x - Step 3: Cross multiply
124,378.91x = 171,670.62 × 79,048.07 - Step 4: Simplify right side
124,378.91x = 13,570,230,328.35 - Step 5: Solve for x
x = 13,570,230,328.35/124,378.91 - Step 6: Final answer
x = 109,103.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.